Display device



w. swENsoN ET AL DISPLAY DEVICE Filed June 19. 1929 g 7ATTORNE YSPatented Oct. 13,1931

wIilnELM swE NsoNAN GORDON c.

n l im f l ii n It" sfveryj desirable i carrying difierent lgindso fdisplay matter,- such as advert sing, to [provide a ea-rrying "strip:tpr the display which Willfedvance' intermittently andrhave perniitjthe ready observation and reading of ztnyf'lilisplayfniatter 'thztt;thefe'l'm2ty' be ex: g p v p g rolls being .oarrled [shafts suitablymounted in'bearings (notsho'vvn); "The lowposed. .Z In. order that thetripm'ay have c n;

eid (arable length. it is preferahlclto Inount'it' m iipon rollsati theendsand' thatlthe' strlp after it hasfcoinpletedits lengthbe reversed sothatltheo'peretion of the strip back and forth maycpm imle as longasjd'esired? p i fTh'e "control .jOf 'n'ch devices is. important both es-tO thefnieking gand' breaking .of the drivinggmechenism so as to make'the advance int ermittent. -Thematter ofgivlng a. suiticient intervalbetween zichhldvaiice. and the matter of reverse 1, is also of.mportance. Thefgpre sent invention CCQmPlIShGS, these ifi'erentfunctions in a simple and economi c n ,5 lftgisalsofdesirable tocompelthe finalz stoppage of the-strip at one of the points 'ofadvet-nee so that the clisplay vvhich left in V ew may be complete. Thepresent invent on also provides for this. Features and details ficzitionand claims. W I

I a y Apreferred em odimentof theinvent on is illustrated in theaccompanying drewlngs of the invention will appear from the speci as itappears in .38.; 1

apparatus.

. Fig.1sh0vvsa diagremnieticel of the Fig. 2 a perspectivevi'evvloftheapparetn's' Fig. 3 a' detail oflthe contact rnechenism "for the stripcontrol. 7 i: Fig. 4eyielding retardingdevice for retarding the snap"shift of the reversing'mechsw'nnson, or. ERIE, rmiNsizLvANfIA Q nisrmiim mjv jthetripde 1- marks" the display strip. r i i-S ee I erztbly ofsome non-conducting material, 'orclinarily ,qil-clqth-being one form ofpossible material; t'l hisstrip passes. overla, lower erendfof-the.strip -isgrnountedon roll 5 end the upper end 'ofthestriponeroll 6.; A

ear 7 is-fixedflwith the roll 5% and a. pinion 8 With-the: gear 10. Theshaft 9 is slidingly end. "rotatively inounted in bearings (not Qshovvn)'.= I l g r The stripis" provided, with reversing bars 12*ehd 13.Thesebars are secured to the strip near the ends of the strip and"project beyond the-edges of the strip. bar 12 is a'dziptc'd to engageafshift lever 14; This lever-is ,U-shaped engaging" theta: 12st .bothedges of the stripland is pivoted on pins 1-5. spring '16 extends fromthe lever 14 to a, lever 17. The lever 17 ispivotg ed on a pin 18.' AlinkQO- isconnected'by a pin 19 tothe leverl7fl A lever 21, similar.

'to-the, lever 14,-is pivoted M22 and isin'the pathfof the bar1 13iItis'connected by aspring 23iWitha-lever- 24:. lTheflleveriQll ispivoted ona pin 25; The link 20 is secured tothelever 2 1, by apinQGQThe linkjQOis connected tO theleverQZ by z fpi'n 28 The lever-F27'ispivotally mounted at 127a. The

lever is provided with e forke'dend andconnecte'd loyjpins 29 with a.sleeve. 3 0..1The sleeve 30 isrotativelymounted on the shaft 9hutjlocked egainstendvvise movementreletively theretof TA yielding.detent 31' is- ';(.S-ee"Fig;/1). It is adaptedto; tr'auverse aseginent33 and to belengagedj bynotches 34.

' i L the operation. of the reversing device,

when thelever'14', 0e21, is engaged hy'the har 12, ojr13 respectivelythe spring 16, or 23; as the case may be is loaded and extendedmountedon. the I'ever27 and is adaptedtd be 'yieldinglyf forcediforwardby a. spring 32 until the yielding detent 31 is overcome, when there isa snap shifting of the shaft 9 throwing the gear 8, or the gear 11, intomesh with the gear 7, or the gear 8, depending on the direction of theshaft. Thus the direction of movement of the strip is reversed.

A gear 35 is connected with the shaft 9 by a spline36. It meshes with apinion 37. The pinion 37 is. fixed on a shaft 38. A clutch cone 39 issplined on the shaft 38 by a spline 40 and is adapted to slide forward,or back, onsaid shaft. A spring 40a tends to set the clutch. A clutchdisc 41 is adapted to receive the cone 39. It is fixed on a shaft 42. Agear 43 is fixed ontheshaft 42 and is driven from a gear 44. The gear 44is fixed on a shaft 45 which is connected with the driven shaft of anelectric motor 46. The strip is provided atintervals with perforations47 and the controlling contact for the motor is made by brushes whichmake contact through these perforations, or are insulated by the stripitself. Thus a very convenient control is provided by means of which theintervals, or length of travel of the strip may be easily controlled, asdesired. The guide roll 2 is provided with a conduct ing band'48 at itsouter end. Abrush 49 operates on this band. The brush is pivoted at 50and is held incontact by a spring 51. Line wires 52 and 53 supply themotor. A branch 54 extends from the wire 52 to the brush.49.- A similarbrush 55 is arranged to operate on the strip and in the path of theperforations 47 so that when the perforations register with the brushcontact is made by the brush with the conducting ring 48 and thus withthe brush 49. The brush 55 is pivotally mounted at 56 and held incontact by a spring 57. A wire 58 extends from the brush 55 to a switch59 and thence by a wire 60 to a solenoid 61 and from the solenoid; tothe wire 53 by a wire 62. g g

A lever 63 is pivotally mounted on a pin 64 and a link 65 is connectedwith the lever by a pin 66. The link 65 extends to a lever 67 The lever67 is pivoted on a pin 68 and is provided with a fork at its end whichis connected by pins 69 with a sleeve 69a extending from the cone 39. Itwill readily be seen that as the lever 63 is moved toward the left theclutch will be drawn out to the position shown in Fig. 1. A shoulder 70is arranged on the lever 67 and this is caught by a latch 71 when theclutch is released. The latch 71 is moved to engaging position by aspring 73 so that when the clutch is open-ed through the action of thelever 63 it is locked in open'positi-on by this latch.

. The active element of the solenoid is connected with the lever 63 by apin 61a. It will readily be seen that as the circuit is closed by thebrush 55 that the solenoid becomes active and moves the lever andreleases the clutch. A pulley 74 is fixed on the shaft 45 and drives apulley 76 by means of a belt 75. The pulley 7 6 is fixed on a shaft 7 7and this shaft has a screw thread 78. The shaft is journaled in posts79. A sleeve 80 extends between the post 79 and around the Ytimingframe86. The timingframe is slidingly mounted on the tube 80. A guiding arm87 extends from the frame 86 and engages a guide rod 88 which looks theframe from turning on the tube 80. A pin 89 extends fromthe segmentalnut and is pressed for ward by a spring 90, thus yieldingly pressing thenut into engagement when the nut is released from the control of the;cam 84. A controlling arm 91 extends from the cam and this is adaptedtobe engaged byja cam 92 on the end of a lever 93. The lever 93 ispivotedon a pin 94 and is connected by a link 95 with the'lever 63. So thatwhen the lever 63 is operated in response to the activity of thesolenoid the cam 92, acting on'the arm 91 rotates the cam .84 andreleases the segmental nut which, under th-einfiuen'ce of the spring,engages the thread. Theframe 86 then begins the traverse of the tubethrough the action of the screw 7 8. As it advances, the arm 96 passesover and rests on the platform 96 and on further advance engages a lever97. This lever 97 is forced downwardly .by a spring 100 so that as thearm passes 01f the platform 96 it is immediately tripped by the lever 97which has loaded the spring 93 as it is forced upwardly by the arm as itmovesforward over the platform 96. The arm snaps down as it moves offthe platform, as indicated in Fig. 9, throwing the cam 84 into positionto release the nut and the "frame is then automatically retracted, thearm passing under the platform 96 in the return movement. A cord 101extends from the frame 86 to a spring 102, the cord being carried arounda pulley 103; This 'spring'retracts the frame 86 when the nutis'released and re-sets it at the new position. 1 r

A switch 104 in the line of the wire- 58 leading to the solenoid isclosed with the frame 86 in its initial position but as soon as theframe 86 has started to travel the switch .104 is opened so that currentis cut ofiof the solenoid and thus the consumption of current isreduced.

As the frame advances through the action ,of thescrew, which we term thetiming device, the frame has a post 105 which contacts a finger 106carried by the latch 71 When, therefore, the frame has practicallycompleted the traverse of its movement it contacts thisfingen 106, tripsthe latch 71' and permits the re-setting of the clutchand thus.

. ing to the brushes 49 and 55 and controlling It is desirable to compelthe final stoppage of the strip at a point whichwill leave oneanother'advance of the display strip.

of the display it'eatures of the strip in its proper location at thepoint of advance. This is accomplished by a switchmec'hanism 107. A linewire 108, companion to the line 7 wire 52 extends to a three-way switch109.

This three-way switch has posts 110, 111, 112,-

and 113 and a switch blade 114 adapted to connect the posts 110 and 113,or'the posts 112 and 111. The wire 108 is connected with the post 110and-through a wire 115 with the 0st 111. The post 113 is connected by awire 116 with a switch blade 117; A switch blade 118 has a contactfinger 119 engaging the blade 117. A Wire 120 extends from the blade 118to the wire 53. The lever 97 has an extension 121 which is adaptedtoen'gage the end of the blade 118 and open the contact between thefinger 119 and theblade 117. In

operation, with theswitch' set between-111 and 112 there is a directconnection between the wire 108 and the wire 53 and thus the V apparatusmaybe started and continue to run. When it is'desired to stop theapparato the brushes 49 and 55'. l I V In Fig. 6 we haveshownanalternative construction in which a contactbar 125Iextends across thestrip and is adapted-to be tus the blade 114 is thrown between the posts110and113. Current will then pass, b way of the wires 116, blade. 117,contact nge rs' 119, blade 118, andwire 120 to the wire 53 and this willcontinue until the frame 86 contactsthe lever 97 at one of the points ofstoppage'in the advance of the strip and this lift- .ing of the lever 97depresses the extension 121 and opens the circuit and finally stops themachine. The parts remain in this position until the switch 109 isthrown connecting the posts111 a11d-112. I

It will be noted, therefore, that ,withthis apparatus there is a stripwhich may be of very considerable length and that it isina simple mannerintermittently advanced and stopped making the proper display atintervals and that, it is provided with a reversing mechanism which willreverse the strip automaticallyat the ends of the travel of the strip;that it is provided with a timing device by which the interval betweeneach advance may be controlled as desired; and that it is driven by aconstantly operating" motor and thatthe intermittent advance iscontrolled by the setting and release of a.

driving clutch.- It will also be noted that the current control isdirectly responsive tocon partsl'of the ductivity conditions indifi'erent strip itself.

mittently; a continuously actuated electric engaged by brushes 12 6 and127 corresponds the'circuits inthe same manner.

What we claim as new is i V 1. In a display device, the comloination ofa display strip; mountings" for the strip;

automatic means foradvancing the strip intermittently comprising aclutch; a spring setting the clutclnan electric device moving the clutchto release it, and a latch holding y 7 .the clutch in release position;and a timing.

aldisplay strip; mountings for the strip}: p1 automatic means advancingthe strip inter-' mittently; anelectric motor drive for the means; a"timing I device controlling the inv r terval between advances and aswitch for the motor operative to cutofl? thei'cu'rrent from the motoronly during an. interval between advances;

In a display device, the combinationof 50 a display strip;' mountingsfor the strip; an

tomatic meansadvancing thestrip intermits tently comprising a timingdevice controlling trol device actuated by the timing device foreiiecting the stoppage of the means onlydur ing an intervalbetweenadvances. I I 4. Ina displayv device, the combination of {adisplay strip; mountings 'for the strip;

automatic means advancing the strip intermotor driving the means; aclutch in the the interval between the advances; and a con- I 1 drive; aspring setting the clutch; electric devices moving the clutch torelease. position a control for'the' electric device responsive toditl'erences in conductivity of the strip;

a timing device controlling the interval hepage of the means only at oneofthe points control for the means effecting a final stop of advance,said control devicebeing actuated Y I by the timing device.

In testimony whereof we ourhands.

GORDON c. SWENSONH In Fig. 5 we have'shown an alternative constructionin which the strip is provided with "contact plates l22 which areadaptedto corresponding engage brushes 123 and 124:

have-hereunto set in "WILHELM swENsoN; I

a latch holding the clutch in release position;

